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Income Taxes - Schedule of Components of Deferred Income Tax (Details) - CNY (¥) ¥ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred tax assets |  |
Accrued expenses | ¥ 6,511 | ¥ 13,270
Advertising expenses carry-forwards | 58,288 | 87,600
Net operating loss carry-forwards | 525,305 | 285,018
Total deferred tax assets | 590,104 | 385,888
Less: valuation allowance | (504,591) | ¥ (385,888)
Deferred tax assets, net | 85,513 |
Deferred tax liabilities |  |
Deferred costs | (87,954) |
Total deferred tax liabilities | ¥ (87,954) |

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